Granules Centralized Feeding System

The Granules Centralized Feeding System is an integrated solution designed based on the layout of customer-site machines and their raw material consumption, combined with auxiliary equipment. It enables centralized feeding and control, achieving unmanned, continuous molding operations throughout the entire plant. Main system components include: Control Console, Cyclone Dust Collector, Filter, Blower, Branch Station, Drying Hopper, Dehumidifier, Material Selection Rack, Micro-feeding Hopper, Sight Hopper with Sensor, Air Shut-off Valve, and Material Shut-off Valve. The feeding volume can be flexibly adjusted according to the production capacity of different molding machines. This system enables uninterrupted, unmanned continuous molding operations. It allows for changing raw material types and the combination method of multi-color materials as needed, automating the coloring process. The system can achieve full automation via a monitoring console, automatically recycling and using sprue cold slug, controlling feeding equipment, and preventing blockages in storage silos.

The Granules Centralized Feeding System handles polymer materials flexibly and rapidly, controlling a complete material processing workflow from storage and conveying to feeding processing equipment. The fully automated process ensures no material waste or handling of outdated material. Single-phase and three-phase loaders can work independently or be integrated with vacuum pumps and feeding/conveying equipment, such as indoor/outdoor silos, bag unloading stations, and dust removal systems, within the feeding system.

Dehumidifying Drying Combination

• Ensures stable and highly efficient drying of raw materials, even in high-humidity environments.

• The centralized dehumidifier, equipped with a sealed circulation system, provides a continuous flow of dry air.

• Adequately dries highly hygroscopic plastics, ensuring good product quality.

Hopper Dryer

• Uniform heat within the drying hopper ensures raw materials are thoroughly dried.

• Downward-blowing hot air design and cyclone exhaust further improve drying efficiency.

• The hopper is made of stainless steel with an insulation layer, equipped with a clean-out door and sight window.

• Individual heating controllers allow setting different drying temperatures for different materials.

• Drying hoppers are available with capacities ranging from 12KG to 5000KG.

Raw Material Distribution System

• Easy and quick material changeover.

• Sturdy, durable, and long-lasting.

• Quick-connect couplings allow selection of suitable distribution pipes; distributors and matching couplings enhance system efficiency.

• Can supply multiple molding machines simultaneously.

Loading Box

• Provides material shut-off function before pre-dried material enters the conveying pipe.

• After drying, uses the loading box’s shut-off function to send material directly to the molding machine, preventing moisture reabsorption.

• Optional sealed conveying with dry air function.

Sight Hopper with Sensor

• Can be installed directly at the molding machine feed throat.

• Adjustable photoelectric sensor switch.

• Automated material monitoring and vacuum diaphragm valve.

• Continuous material supply ensures the molding machine never runs short.

Filter

• Large capacity dust collection barrel.

• Automatic cleaning of the dust barrel using high-pressure air.

Control Console

• Monitors and controls the entire conveying system via the console’s operation panel.

• LCD touchscreen allows easy control of hopper operation.

• Monitors, manages, and operates various stages of material handling.

• Displays set values, actual values, and alarm messages to aid fault diagnosis.

• Utilizes branded PLC controllers for high system reliability.

The Granules Centralized Feeding System employs vacuum conveyance, transporting plastic raw material from storage silos to a centralized dehumidifying drying system via a centralized pipeline network, then delivering the dried material to each injection molding machine. The system uses a “one machine, one pipe” design principle, ensuring material is conveyed by air throughout the system and preventing moisture reabsorption after dehumidification/drying. It operates stably without blockages. Used in conjunction with the dehumidifying drying system, the conveying lines are purged after each drying/conveying cycle, ensuring no residual granules remain in the pipelines. This prevents moisture reabsorption and guarantees consistent properties of the material delivered to the molding machines. Under vacuum negative pressure, inherent dust in the raw material is filtered out by the dust filtration system, helping to improve the quality of molded products.

POTHCARY specializes in granule material handling systems. Our strengths lie in our deep understanding of granule material characteristics and material processing workflows. We excel at solving problems encountered during conveying, storage, gravimetric metering, mixing, and screening, providing comprehensive solutions and overall project planning, ultimately delivering a customized turnkey project based on client needs. We not only design systems but also manufacture key components, thereby ensuring product quality and reducing user maintenance costs during system operation.

• Improve ventilation in the centralized feeding area to create good environmental conditions.

• Regularly inspect conveying pipelines, especially vacuum and compressed air lines, for leaks. Take immediate action if leaks are found.

• Pay attention to timely cleaning of loading hoppers and drying hoppers to ensure cleanliness.

• Perform reasonable maintenance on individual unit equipment.

• Regularly clean dust from the system’s central filter or replace the filter element.

• Train new employees, implement a dedicated management responsibility system and single-machine operation responsibility, establish maintenance records, and document daily operations and maintenance.